BRAKE AND CONTROL THEREFOR

摘要

A spring applied, electrically released brake illustrated as applied to escalators wherein the braking apparatus applies a first braking force sufficient to provide a predetermined deceleration under no load conditions. After a time delay, a second braking force is applied which when combined with the first braking force is sufficient to provide said predetermined deceleration under full load conditions. In emergency situations, when a safety circuit is interrupted, both braking forces are applied simultaneously to produce minimum stopping time.